diff --git a/.run/Rover [check].run.xml b/.run/Rover [check].run.xml
new file mode 100644
index 0000000..f18c25b
--- /dev/null
+++ b/.run/Rover [check].run.xml
@@ -0,0 +1,24 @@
+
+
+
+
+
+
+
+
+
+
+
+ true
+ true
+ false
+ false
+
+
+
\ No newline at end of file
diff --git a/.run/Rover [detekt ktlintCheck].run.xml b/.run/Rover [detekt ktlintCheck].run.xml
new file mode 100644
index 0000000..8d0aa2c
--- /dev/null
+++ b/.run/Rover [detekt ktlintCheck].run.xml
@@ -0,0 +1,25 @@
+
+
+
+
+
+
+
+
+
+
+
+ true
+ true
+ false
+ false
+
+
+
\ No newline at end of file
diff --git a/.run/Rover [test].run.xml b/.run/Rover [test].run.xml
new file mode 100644
index 0000000..2ca8fb6
--- /dev/null
+++ b/.run/Rover [test].run.xml
@@ -0,0 +1,24 @@
+
+
+
+
+
+
+
+
+
+
+
+ true
+ true
+ false
+ false
+
+
+
\ No newline at end of file
diff --git a/02_OrangeBelt.v.2.1.pdf b/02_OrangeBelt.v.2.1.pdf
new file mode 100644
index 0000000..4ebcbfb
Binary files /dev/null and b/02_OrangeBelt.v.2.1.pdf differ
diff --git a/README.md b/README.md
index 71122aa..75bfc1e 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,7 @@
-# Rover
+# ๐ฐ๏ธ Mars Rover
 [](https://codecov.io/gh/appsoluut/dojo-mars-rover) [](https://app.deepsource.com/gh/appsoluut/dojo-mars-rover/) [](https://app.deepsource.com/gh/appsoluut/dojo-mars-rover/) [](https://app.deepsource.com/gh/appsoluut/dojo-mars-rover/)
-A Kotlin project bootstrapped with **Gradle**, **Detekt**, **Ktlint**, **JUnit**, and **JaCoCo**.
-
## ๐ Features
- ๐ง Gradle wrapper included
@@ -26,11 +24,98 @@ cd Rover
# Run Detekt and Ktlint checks
./gradlew detekt ktlintCheck
-
-# Run
-./gradlew run
```
-# License
+## Problem
-MIT - feel free to use and modify.
+NASA is landing a robotic rover on a rectangular plateau on Mars.
+This plateau must be explored systematically so that the roverโs on-board cameras can survey the terrain and send images back to Earth.
+
+A roverโs position is represented by:
+- Two integers (**X**, **Y**) indicating its coordinates, and
+- A letter indicating its current heading:
+ - **N** (North)
+ - **E** (East)
+ - **S** (South)
+ - **W** (West)
+
+The plateau is divided into a grid, and the rover moves across it based on simple navigation commands.
+
+For example, a position of `0 0 N` means the rover is at the bottom-left corner, facing North.
+
+---
+
+## Instructions
+
+NASA can send the following commands to the rover:
+
+- `L` โ Turn 90 degrees **left** without moving from the current spot.
+- `R` โ Turn 90 degrees **right** without moving from the current spot.
+- `M` โ Move **forward** one grid point in the direction it is facing.
+
+> **Important**:
+> Moving North from `(x, y)` goes to `(x, y+1)`.
+> Moving East from `(x, y)` goes to `(x+1, y)`, and so on.
+
+---
+
+## Input
+
+The input consists of:
+
+1. **First parameter**: The roverโs **starting position**: two integers and a letter (e.g., `1 2 N`).
+
+2. **Second parameter**: A string of **movement instructions** (e.g., `LMLMLMLMM`).
+
+The rover processes all instructions in sequence.
+
+---
+
+## Output
+
+After executing all the commands, the rover reports its **final coordinates and heading**.
+
+---
+
+## Example
+
+| Starting Position | Instructions | Expected Output |
+|:------------------|:-------------|:----------------|
+| 1 2 N | | 1 2 N |
+| 1 2 N | L | 1 2 W |
+| 1 2 W | L | 1 2 S |
+| 1 2 S | L | 1 2 E |
+| 1 2 E | L | 1 2 N |
+| 1 2 N | R | 1 2 E |
+| 1 2 E | R | 1 2 S |
+| 1 2 S | R | 1 2 W |
+| 1 2 W | R | 1 2 N |
+| 1 2 N | M | 1 3 N |
+| 1 2 E | M | 2 2 E |
+| 1 2 S | M | 1 1 S |
+| 1 2 W | M | 0 2 W |
+| 1 2 N | LMLMLMLMM | 1 3 N |
+| 3 3 E | MMRMMRMRRM | 5 1 E |
+
+---
+
+# ๐ฏ Your Mission
+
+You have been given a **working but fragile** codebase that controls a **single** rover.
+
+Your goal:
+- **Refactor** the code to make it clean, expressive, and easy to maintain.
+- Prepare the code for **future enhancements**.
+- Eliminate technical debt, improve readability, and structure it to allow **easily adding new features** later.
+
+> ๐ง **Hint**:
+> Future missions may require **handling multiple rovers** at once.
+> Your design should naturally evolve toward making this possible.
+
+โ
**Do not change the existing behavior.**
+โ
**All existing tests must continue to pass.**
+
+---
+
+# ๐ Good luck, engineer of Mars!
+Craft code that's ready for exploration... and evolution! ๐
diff --git a/TECHDEBT.md b/TECHDEBT.md
new file mode 100644
index 0000000..2693455
--- /dev/null
+++ b/TECHDEBT.md
@@ -0,0 +1,5 @@
+# TODO
+- [ ] Make ktlint pass checks
+
+# RPP
+- [ ] ...
\ No newline at end of file
diff --git a/build.gradle.kts b/build.gradle.kts
index a7dc9fd..f24e667 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -7,7 +7,7 @@ plugins {
}
application {
- mainClass.set("MainKt")
+ mainClass.set("RoverKt")
}
repositories {
diff --git a/src/main/kotlin/Main.kt b/src/main/kotlin/Main.kt
deleted file mode 100644
index 5dbce6a..0000000
--- a/src/main/kotlin/Main.kt
+++ /dev/null
@@ -1,3 +0,0 @@
-fun main() {
- println("Hello, Kotlin CI/CD world!")
-}
diff --git a/src/main/kotlin/Rover.kt b/src/main/kotlin/Rover.kt
new file mode 100644
index 0000000..15fc851
--- /dev/null
+++ b/src/main/kotlin/Rover.kt
@@ -0,0 +1,43 @@
+package org.example
+
+class Rover {
+ constructor(p: String) {
+ val s = p.split(' ')
+ if (s.size >= 3) {
+ rs.xx = s[0].toInt()
+ rs.yy = s[1].toInt()
+ rs.dd = s[2][0]
+ }
+ }
+
+ fun go(cms: String) {
+ for (c in cms) {
+ when (c) {
+ 'L' -> { when (rs.dd) { 'E' -> rs.dd = 'N' 'N' -> rs.dd = 'W' 'W' -> rs.dd = 'S' 'S' -> rs.dd = 'E'}}
+ 'R' -> { when (rs.dd) { 'E' -> rs.dd = 'S' 'S' -> rs.dd = 'W' 'W' -> rs.dd = 'N' 'N' -> rs.dd = 'E'}}
+ 'M' -> { when (rs.dd) { 'E' -> rs.xx++ 'S' -> rs.yy-- 'W' -> rs.xx-- 'N' -> rs.yy++}}
+ }
+ }
+ }
+
+ fun g(z: Char) {
+ go(z.toString())
+ }
+
+ val xyd: String
+ get() = "${rs.xx} ${rs.yy} ${rs.dd}"
+
+ fun pos(): String {
+ return xyd
+ }
+
+ constructor() : this("")
+
+ private var rs = RoverState()
+}
+
+class RoverState {
+ var xx: Int = 0
+ var yy: Int = 0
+ var dd: Char = 'N'
+}
diff --git a/src/test/kotlin/MainTest.kt b/src/test/kotlin/MainTest.kt
deleted file mode 100644
index 3f2d238..0000000
--- a/src/test/kotlin/MainTest.kt
+++ /dev/null
@@ -1,10 +0,0 @@
-import kotlin.test.Test
-import kotlin.test.assertEquals
-
-class MainTest {
- @Test
- fun testExample() {
- val result = 2 + 2
- assertEquals(4, result)
- }
-}
diff --git a/src/test/kotlin/MarsRoverTests.kt b/src/test/kotlin/MarsRoverTests.kt
new file mode 100644
index 0000000..811074f
--- /dev/null
+++ b/src/test/kotlin/MarsRoverTests.kt
@@ -0,0 +1,30 @@
+import org.example.Rover
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.params.ParameterizedTest
+import org.junit.jupiter.params.provider.CsvSource
+
+class MarsRoverTests {
+ @ParameterizedTest
+ @CsvSource(
+ "1 2 N, ' ', 1 2 N",
+ "1 2 N, L, 1 2 W",
+ "1 2 W, L, 1 2 S",
+ "1 2 S, L, 1 2 E",
+ "1 2 E, L, 1 2 N",
+ "1 2 N, R, 1 2 E",
+ "1 2 E, R, 1 2 S",
+ "1 2 S, R, 1 2 W",
+ "1 2 W, R, 1 2 N",
+ "1 2 N, M, 1 3 N",
+ "1 2 E, M, 2 2 E",
+ "1 2 S, M, 1 1 S",
+ "1 2 W, M, 0 2 W",
+ "1 2 N, LMLMLMLMM, 1 3 N",
+ "3 3 E, MMRMMRMRRM, 5 1 E"
+ )
+ fun `execute commands`(startingPosition: String, instructions: String, expectedOutput: String) {
+ val rover = Rover(startingPosition)
+ rover.go(instructions)
+ assertEquals(expectedOutput, rover.pos())
+ }
+}
\ No newline at end of file